Question Highlight 3D objects

Hello, Unity community!

How can I make an object change its emission to green when I hover my mouse over it, and ensure that it stays selected (green) even after I click it? Does anyone know how to achieve this?

Code (CSharp):

1. public class Interaction : MonoBehaviour
2. {
3.     [SerializeField] private Renderer rend;
4.     private Color color = new Color32(31, 103, 39, 255);
5.     private List<Material> materials;
6.     bool isHighlighted;
7.  
8.     private void Awake()
9.     {
10.         materials = new List<Material>();
11.         materials.AddRange(rend.materials);
12.     }
13.  
14.     public void ToggleHighlight(bool value)
15.     {
16.         if (value)
17.         {
18.             foreach (var mat in materials)
19.             {
20.                 mat.EnableKeyword("_EMISSION");
21.                 mat.SetColor("_EmissionColor", color * 1);
22.             }
23.         }
24.         else
25.         {
26.             foreach (var mat in materials)
27.             {
28.                 mat.DisableKeyword("_EMISSION");
29.             }
30.         }
31.     }
32.  
33.     private void OnMouseEnter()
34.     {
35.         ToggleHighlight(true);
36.     }
37.  
38.     private void OnMouseExit()
39.     {
40.         ToggleHighlight(false);
41.     }
42. }

Thank you!

 

Materials materials array of materials renderer:

Generally accessing .material / .materials is going to give you a fresh copy. (See docs for why and when)

https://forum.unity.com/threads/cha...as-working-now-it-is-not.883372/#post-5923346

https://forum.unity.com/threads/adding-and-removing-a-material-at-runtime.1048649/#post-6783635